Android上的警报对话框的确定​​按钮

Question

这是我的警报代码，它会在按下按钮时显示一条消息。我如何制作一个OK按钮以解散？

    Button bm1 = (Button) findViewById(R.id.button1);
    bm1.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            AlertDialog alert = new AlertDialog.Builder(screen4.this).create();
            alert.setTitle("Doctor");
            alert.setMessage("message");
            alert.setCancelMessage(null);
            alert.show();
        }
    });
}}      

我已经设置了alert.setCancelMessage（null），但它没有显示任何要关闭的按钮。

感谢所有答案。

解决方案：

      Button bm1 = (Button) findViewById(R.id.button1);
       bm1.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            Builder alert = new AlertDialog.Builder(screen4.this);
            alert.setTitle("Doctor");
            alert.setMessage("message");
            alert.setPositiveButton("OK", null);
            alert.show();
        }
    });

Answer 1

将alertdialog更改为：

Builder alert = new AlertDialog.Builder(screen4.this);
alert.setTitle("Doctor");
alert.setMessage("message");
alert.setPositiveButton("OK",null);
alert.show();    

Answer 2

您可以使用此功能为对话框创建“确定”和“取消”按钮，

AlertDialog.Builder builder = new AlertDialog.Builder(
                        getApplicationContext());
                builder.setCancelable(true);
                builder.setTitle("Title");
                builder.setInverseBackgroundForced(true);
                builder.setPositiveButton("Yes",
                        new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialog,
                                    int which) {
                                dialog.dismiss();
                            }
                        });
                builder.setNegativeButton("No",
                        new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialog,
                                    int which) {
                                dialog.dismiss();
                            }
                        });
                AlertDialog alert = builder.create();
                alert.show();

Answer 3

难道只能使用正面按钮来完成吗？

AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage("Look at this dialog!")
       .setCancelable(false)
       .setPositiveButton("OK", new DialogInterface.OnClickListener() {
           public void onClick(DialogInterface dialog, int id) {
                //do things
           }
       });
AlertDialog alert = builder.create();
alert.show();

Answer 4

您可以使用setPositiveButton和setNegativeButton

执行此操作

    alert.setPositiveButton("OK", new OnClickListener() {

        @Override
        public void onClick(DialogInterface alert, int which) {
            // TODO Auto-generated method stub
            //Do something
            alert.dismiss();
        }
    });
    alert.setNegativeButton("Cancel", new OnClickListener() {

        @Override
        public void onClick(DialogInterface alert, int which) {
            // TODO Auto-generated method stub
            alert.dismiss();
        }
    });

编辑：

alert.setButton("OK", new DialogInterface.OnClickListener() {

    @Override
    public void onClick(DialogInterface dialog, int which) {
        // TODO Auto-generated method stub
        // Do something
        alert.dismiss();
        }
    });
alert.setButton("Cancel", new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialog, int which) {
        // TODO Auto-generated method stub

        alert.dismiss();
        }
    });

Answer 5

    bt = (Button) findViewById(R.id.button1);
    bt.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            ab = new AlertDialog.Builder(MainActivity.this);

            ab.setTitle("confirm");
            ab.setIcon(R.drawable.ic_launcher);
            ab.setMessage("Do u want to close this application?");

            ab.setPositiveButton("ok", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int i) {
                    Toast.makeText(MainActivity.this, "ok", Toast.LENGTH_SHORT).show();
                }
            });

            ab.setNegativeButton("cancle", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int i) {
                    Toast.makeText(MainActivity.this, "cancle", Toast.LENGTH_SHORT).show();
                }
            });

            ab.show();
        }
    });